WO2008143421A1 - A ground rod structure with drills blade shape - Google Patents
A ground rod structure with drills blade shape Download PDFInfo
- Publication number
- WO2008143421A1 WO2008143421A1 PCT/KR2008/002678 KR2008002678W WO2008143421A1 WO 2008143421 A1 WO2008143421 A1 WO 2008143421A1 KR 2008002678 W KR2008002678 W KR 2008002678W WO 2008143421 A1 WO2008143421 A1 WO 2008143421A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ground
- rod
- ground rod
- drills
- base part
- Prior art date
Links
- 239000011435 rock Substances 0.000 claims abstract description 30
- 238000009434 installation Methods 0.000 claims abstract description 29
- 230000008878 coupling Effects 0.000 claims description 23
- 238000010168 coupling process Methods 0.000 claims description 23
- 238000005859 coupling reaction Methods 0.000 claims description 23
- 238000005553 drilling Methods 0.000 claims description 6
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 5
- 239000010962 carbon steel Substances 0.000 claims description 5
- 230000007797 corrosion Effects 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 2
- 230000008859 change Effects 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000010432 diamond Substances 0.000 claims description 2
- 238000005246 galvanizing Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 18
- 230000009467 reduction Effects 0.000 abstract description 5
- 230000007257 malfunction Effects 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 208000033999 Device damage Diseases 0.000 description 2
- 208000032368 Device malfunction Diseases 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/56—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation one conductor screwing into another
Definitions
- the present invention relates to a ground rod used for electric installations to prevent accidental electric shock or electronic device damage and malfunction. More particularly, the present invention relates to a ground rod structure with a drill's blade shape that can achieve not only reduction of noise and vibration relating to grounding construction but also reduction of construction costs relating to installation of the ground rod in the ground or base rock.
- a grounding installation is one of the most basic safety devices in electric installations. When the grounding installation is improperly built in the electric installations, it can act as a main cause of accidental electric shock or electronic device damage and malfunction. Hence, it is necessary to maintain a perfect grounding installation for prevention of accidental electric shock, protection of expensive devices and prevention of improper operation of the devices.
- a ground electrode of an electric pole or the like must be buried to a depth of 75 cm or more below ground when constructing the electric pole or the like at a location where a person can easily contact the electric pole or the like. Further, when the electric pole is provided with an electric transformer, the electric pole must have a ground resistance of 25 ⁇ or less according to the Korean technical standards for electrical equipment.
- FIG. 3 is a schematic view of a conventional multi-stage deep-driven type ground rod.
- the conventional multi-stage deep-driven ground rod structure comprises a ground line 10 extending from a lightning arrester, which is disposed to protect devices such as transmission and distribution lines, electric transformers, etc., from lightning, into the ground, a multi-stage deep-driven type ground rod 20 connected to a distal end of the ground line 10 and buried in the ground, and a sleeve 30 for connecting the ground rod 20 to the ground line 10.
- the ground rod 20 can be extended by means of screw or coupling shanks.
- the structure of the conventional multi-stage deep-driven type ground rods faces a substantial difficulty in penetrating the base rock and fails to ensure a ground resistance satisfying the technical standards for electrical equipment.
- the base rock can be broken by, for example, continuously striking the base rock for about 10 minutes with a breaker. However, severe noise and vibration are accompanied with such a striking operation.
- the structure of the conventional multi-stage deep-driven type ground rod requires grounding construction due to difficulty in drilling though the base rock until the stipulated grounding resistance can be ensured by installing new ground electrodes in parallel to the previous ground electrode.
- a wide and large cavity must be formed by widely breaking a concrete pavement layer or an asphalt pavement layer of the road. Such an additional installation operation of the ground rods and wide-area digging operation cause increase of workload, noise and construction costs. Disclosure of Invention Technical Problem
- the conventional multi-stage deep-driven type ground rod entails substantial difficulty in ensuring a ground resistance satisfying the technical standards for electrical equipment due to difficulty in breaking a large and wide base rock which may be encountered during installation of the conventional ground rod by the deep driving process, and requires a continuous striking operation for breaking the large and wide base rock with a breaker for installation of the conventional ground rod, which generates severe noise and vibration.
- an object of the present invention is to provide a screw or coupling connection type ground rod structure that has a screw or coupling connection type ground rod machined into a drills blade shape to prevent severe noise and vibration typically generated when striking the base rock with the breaker and that can quietly perforate the base rock by means of a power transmission type drill (not shown), instead of the striking operation using the breaker, upon encountering the large and wide base rock in the ground during installation of the ground rod, thereby making it easy to ensure a stipulated grounding resistance.
- the ground rod of the present invention has a cylindrical body processed to have a drills blade shape, which is different from the conventional multi-stage deep-driven type ground rod having a simple cylindrical body and a cylindrical lead terminal.
- the structure of the conventional ground rod entails difficulty in performing the deep driving operation in the same location and requires additional grounding construction near the previous construction site in order to ensure a grounding resistance satisfying the technical standards for electrical equipment.
- the ground rod since the ground rod has the drills blade shape, it can be driven into the base rock encountered during installation of the ground rod.
- the ground rod of the invention permits grounding construction satisfying the grounding resistance of the technical standards for electrical equipment, thereby ensuring significant reduction of construction workload and costs.
- the present invention can solve the problem of the conventional ground rod, which cannot be driven into the base rock and requires an additional operation of breaking the base rock encountered during installation of the ground rod in the ground, so that residents in the vicinity of the construction site are not subjected to severe noise, which is inevitably generated by the operation of breaking the base rock for installation of the conventional ground rod.
- the present invention can solve the problem of the conventional ground rod, which entails civil suits demanding reparations due to cracks in building walls or the like by vibration during the operation of breaking the base rock with a breaker, and can permit environmentally friendly grounding construction so as not to disturb the residents in the vicinity of the construction site.
- FIG. 1 is a schematic view of a ground rod having a drills blade shape according to one embodiment of the present invention
- FIG. 2 is an exploded sectional view of the ground rod according to the embodiment of the present invention.
- FIG. 3 is a schematic view of a conventional deep-driven type ground rod.
- a screw or coupling connection type ground rod structure with a drills blade shape comprising: a ground line extending from a lightning arrester or a processed branch line, which is disposed to protect devices such as transmission and distribution lines and electric transformers from lightning, into the ground, a screw or coupling connection type drills blade- shaped ground rod connected to a distal end of the ground line and buried in the ground, the ground rod being extended by means of screw or coupling engagement, and a sleeve for connecting a lead terminal of the drills blade-shaped ground rod to the ground line, wherein the drills blade-shaped ground rod perforates a base rock when the base rock is encountered during installation of the screw or coupling connection type ground rod, thereby ensuring easy grounding construction.
- FIG. 1 is a schematic view of a ground rod having a drills blade shape according to one embodiment of the present invention
- Fig. 2 is an exploded sectional view of the ground rod according to the embodiment of the present invention.
- a screw or coupling connection type ground rod structure includes a ground line 100 extending from a lightning arrester or a processed branch line, which is disposed to protect devices such as transmission and distribution lines and electric transformers from lightning, into the ground 500, a multi-stage screw or coupling connection type ground rod 200 buried in the ground 500 in a state of being connected to a distal end of the ground line 100 and capable of being extended by means of screw or coupling engagement, and a sleeve 300 for connecting a lead line 233 connected to a lead terminal 230 of the ground rod 200 to the ground line 100.
- the drills blade-shaped ground rod 200 includes a base part 210, a connection rod 220, and a spiral cutting edge 241 integrally formed with the base part 210 and connection rod 220, which constitute a drills blade-shaped body of the ground rod 200, to perforate a base rock in the ground during installation of the ground rod.
- connection space between the base part 210, the connection rod 220, and the lead terminal 230 constituting the ground rod 200 is filled with a conductive compound 400 to prevent corrosion of the base part 210, the connection rod 220 and the lead terminal 230.
- Fig. 2 is an exploded view of the ground rod 200.
- the screw or coupling connection type ground rod 200 with the drills blade shape includes the base part 210, the plural connection rings 220, and the lead terminal 230.
- the base part 210 is made of a hard material "a", which is carbon steel for machine structural use (KSD 3752) or cemented carbide used for conventional drills blades, and has a cone shape tip end 211 formed at one end to be driven into a base rock, the spiral cutting edge 241 with industrial diamonds for drilling rocks integrally welded to a leading end of the cutting edge, and a screw rod or a coupling shank 213 formed at the other end for screw or coupling engagement.
- a hard material
- a which is carbon steel for machine structural use (KSD 3752) or cemented carbide used for conventional drills blades
- connection rods 220 are also made of the hard material "a" which is carbon steel for machine structural use (KSD 3752) or cemented carbide used for the conventional drills blades.
- Each of the connection rods 220 has a nut hole or a coupling hole 221 formed at one end so as to correspond to the screw rod or coupling shank 213 of the base part 210 and a screw rod or a coupling shank 223 formed at the other end such that the connection rod 220 can be coupled to the base part 210 and to another connection rod 220 through the screw rods or coupling shanks 213, 223 and the nut hole or coupling hole 221.
- the connection rods 220 have the same size, the plural connection rods 220 can be connected in series.
- the lead terminal 230 is also made of the hard material "a" which is carbon steel for machine structural use (KSD 3752) or cemented carbide used for the conventional drills blades, and has a nut hole or a coupling shank 231 at one end to be coupled to the connection rod 220 by screw or coupling engagement, and the lead line 233 inserted into the other end.
- a hard material which is carbon steel for machine structural use (KSD 3752) or cemented carbide used for the conventional drills blades
- Each of the base part 210, the connection rods 220, and the lead terminal 230 has an outer surface "c" subjected to corrosion resistance treatment via hot-dip galvanizing.
- the hard material "a" for the base part 210, the connection rods 220 and the lead terminal 230 is preferably SM45C (carbon steel for machine structural use) or cemented carbide used for the conventional drills blades, which has a sufficient strength so as not to suffer from property change or bending during drilling operation.
Landscapes
- Manufacturing Of Electrical Connectors (AREA)
- Earth Drilling (AREA)
Abstract
Disclosed herein is a ground rod used for electric installations to prevent accidental electric shock or damage and malfunction of electronic devices. The ground rod can achieve not only reduction of noise and vibration relating to grounding construction but also reduction of construction costs relating to installation of the ground rod in the ground or base rock.
Description
Description A GROUND ROD STRUCTURE WITH DRILLS BLADE SHAPE
Technical Field
[1] The present invention relates to a ground rod used for electric installations to prevent accidental electric shock or electronic device damage and malfunction. More particularly, the present invention relates to a ground rod structure with a drill's blade shape that can achieve not only reduction of noise and vibration relating to grounding construction but also reduction of construction costs relating to installation of the ground rod in the ground or base rock. Background Art
[2] A grounding installation is one of the most basic safety devices in electric installations. When the grounding installation is improperly built in the electric installations, it can act as a main cause of accidental electric shock or electronic device damage and malfunction. Hence, it is necessary to maintain a perfect grounding installation for prevention of accidental electric shock, protection of expensive devices and prevention of improper operation of the devices.
[3] According to guidelines of the Korean Occupational Safety & Health Agency, a ground electrode of an electric pole or the like must be buried to a depth of 75 cm or more below ground when constructing the electric pole or the like at a location where a person can easily contact the electric pole or the like. Further, when the electric pole is provided with an electric transformer, the electric pole must have a ground resistance of 25 Ω or less according to the Korean technical standards for electrical equipment.
[4] Typically, as the depth of a ground rod buried in the ground is increased, the ground resistance of the ground rod can be more easily ensured. When encountering a large and wide base rock in the ground during installation of the ground rod, it is difficult to ensure a ground resistance satisfying the technical standards for electrical equipment due to difficulty in drilling through the base rock.
[5] Accordingly, installation of a hot-dip galvanized ground rod using a deep driving process has been proposed. Fig. 3 is a schematic view of a conventional multi-stage deep-driven type ground rod. The conventional multi-stage deep-driven ground rod structure comprises a ground line 10 extending from a lightning arrester, which is disposed to protect devices such as transmission and distribution lines, electric transformers, etc., from lightning, into the ground, a multi-stage deep-driven type ground rod 20 connected to a distal end of the ground line 10 and buried in the ground, and a sleeve 30 for connecting the ground rod 20 to the ground line 10. Here, the ground rod 20 can be extended by means of screw or coupling shanks.
[6] However, when encountering a large and wide base rock in the ground during installation of the ground rod 20 by the deep driving process, the structure of the conventional multi-stage deep-driven type ground rods faces a substantial difficulty in penetrating the base rock and fails to ensure a ground resistance satisfying the technical standards for electrical equipment. The base rock can be broken by, for example, continuously striking the base rock for about 10 minutes with a breaker. However, severe noise and vibration are accompanied with such a striking operation.
[7] As such, while breaking the base rock for installation of the conventional ground rod, severe noise is generated and inevitably disturbs residents in the vicinity of the construction site. Further, vibration from the striking operation causes cracks in building walls or the like, which frequently leads to civil suits demanding reparations. Additionally, noise and vibration relating to the installation of the conventional ground rod causes residents in the vicinity of the construction site to view construction of electric installations unfavorably, which leads to civil applications seeking injunctions against construction of electric installations. Further, upon encountering a large and wide base rock in the ground during installation of the ground rod 20 by the deep driving process, the structure of the conventional multi-stage deep-driven type ground rod requires grounding construction due to difficulty in drilling though the base rock until the stipulated grounding resistance can be ensured by installing new ground electrodes in parallel to the previous ground electrode. For this purpose, a wide and large cavity must be formed by widely breaking a concrete pavement layer or an asphalt pavement layer of the road. Such an additional installation operation of the ground rods and wide-area digging operation cause increase of workload, noise and construction costs. Disclosure of Invention Technical Problem
[8] As such, the conventional multi-stage deep-driven type ground rod entails substantial difficulty in ensuring a ground resistance satisfying the technical standards for electrical equipment due to difficulty in breaking a large and wide base rock which may be encountered during installation of the conventional ground rod by the deep driving process, and requires a continuous striking operation for breaking the large and wide base rock with a breaker for installation of the conventional ground rod, which generates severe noise and vibration. Technical Solution
[9] Therefore, the present invention is conceived to solve the problems of the conventional techniques as described above, and an object of the present invention is to provide a screw or coupling connection type ground rod structure that has a screw or
coupling connection type ground rod machined into a drills blade shape to prevent severe noise and vibration typically generated when striking the base rock with the breaker and that can quietly perforate the base rock by means of a power transmission type drill (not shown), instead of the striking operation using the breaker, upon encountering the large and wide base rock in the ground during installation of the ground rod, thereby making it easy to ensure a stipulated grounding resistance.
Advantageous Effects
[10] The ground rod of the present invention has a cylindrical body processed to have a drills blade shape, which is different from the conventional multi-stage deep-driven type ground rod having a simple cylindrical body and a cylindrical lead terminal. Thus, upon encountering a large and wide base rock in the ground during installation of the conventional ground rod by a deep driving process using a hammer or a hydraulic breaker, the structure of the conventional ground rod entails difficulty in performing the deep driving operation in the same location and requires additional grounding construction near the previous construction site in order to ensure a grounding resistance satisfying the technical standards for electrical equipment. However, according to the present invention, since the ground rod has the drills blade shape, it can be driven into the base rock encountered during installation of the ground rod. Thus, the ground rod of the invention permits grounding construction satisfying the grounding resistance of the technical standards for electrical equipment, thereby ensuring significant reduction of construction workload and costs.
[11] Further, the present invention can solve the problem of the conventional ground rod, which cannot be driven into the base rock and requires an additional operation of breaking the base rock encountered during installation of the ground rod in the ground, so that residents in the vicinity of the construction site are not subjected to severe noise, which is inevitably generated by the operation of breaking the base rock for installation of the conventional ground rod.
[12] Further, the present invention can solve the problem of the conventional ground rod, which entails civil suits demanding reparations due to cracks in building walls or the like by vibration during the operation of breaking the base rock with a breaker, and can permit environmentally friendly grounding construction so as not to disturb the residents in the vicinity of the construction site. Brief Description of the Drawings
[13] The above and other objects, features and advantages of the present invention will become apparent from the following description of preferred embodiments given in conjunction with the accompanying drawings, in which:
[14] Fig. 1 is a schematic view of a ground rod having a drills blade shape according to
one embodiment of the present invention;
[15] Fig. 2 is an exploded sectional view of the ground rod according to the embodiment of the present invention; and
[16] Fig. 3 is a schematic view of a conventional deep-driven type ground rod.
Best Mode for Carrying Out the Invention
[17] In accordance with one aspect of the present invention, the above and other objects can be accomplished by the provision of a screw or coupling connection type ground rod structure with a drills blade shape, comprising: a ground line extending from a lightning arrester or a processed branch line, which is disposed to protect devices such as transmission and distribution lines and electric transformers from lightning, into the ground, a screw or coupling connection type drills blade- shaped ground rod connected to a distal end of the ground line and buried in the ground, the ground rod being extended by means of screw or coupling engagement, and a sleeve for connecting a lead terminal of the drills blade-shaped ground rod to the ground line, wherein the drills blade-shaped ground rod perforates a base rock when the base rock is encountered during installation of the screw or coupling connection type ground rod, thereby ensuring easy grounding construction. Mode for the Invention
[18] Exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings hereinafter.
[19] Fig. 1 is a schematic view of a ground rod having a drills blade shape according to one embodiment of the present invention and Fig. 2 is an exploded sectional view of the ground rod according to the embodiment of the present invention.
[20] According to one embodiment of the present invention, a screw or coupling connection type ground rod structure includes a ground line 100 extending from a lightning arrester or a processed branch line, which is disposed to protect devices such as transmission and distribution lines and electric transformers from lightning, into the ground 500, a multi-stage screw or coupling connection type ground rod 200 buried in the ground 500 in a state of being connected to a distal end of the ground line 100 and capable of being extended by means of screw or coupling engagement, and a sleeve 300 for connecting a lead line 233 connected to a lead terminal 230 of the ground rod 200 to the ground line 100. The drills blade-shaped ground rod 200 includes a base part 210, a connection rod 220, and a spiral cutting edge 241 integrally formed with the base part 210 and connection rod 220, which constitute a drills blade-shaped body of the ground rod 200, to perforate a base rock in the ground during installation of the ground rod.
[21] Each connection space between the base part 210, the connection rod 220, and the
lead terminal 230 constituting the ground rod 200 is filled with a conductive compound 400 to prevent corrosion of the base part 210, the connection rod 220 and the lead terminal 230.
[22] Fig. 2 is an exploded view of the ground rod 200. As described above, the screw or coupling connection type ground rod 200 with the drills blade shape includes the base part 210, the plural connection rings 220, and the lead terminal 230. The base part 210 is made of a hard material "a", which is carbon steel for machine structural use (KSD 3752) or cemented carbide used for conventional drills blades, and has a cone shape tip end 211 formed at one end to be driven into a base rock, the spiral cutting edge 241 with industrial diamonds for drilling rocks integrally welded to a leading end of the cutting edge, and a screw rod or a coupling shank 213 formed at the other end for screw or coupling engagement. The plurality of connection rods 220 are also made of the hard material "a" which is carbon steel for machine structural use (KSD 3752) or cemented carbide used for the conventional drills blades. Each of the connection rods 220 has a nut hole or a coupling hole 221 formed at one end so as to correspond to the screw rod or coupling shank 213 of the base part 210 and a screw rod or a coupling shank 223 formed at the other end such that the connection rod 220 can be coupled to the base part 210 and to another connection rod 220 through the screw rods or coupling shanks 213, 223 and the nut hole or coupling hole 221. Here, since the connection rods 220 have the same size, the plural connection rods 220 can be connected in series. The lead terminal 230 is also made of the hard material "a" which is carbon steel for machine structural use (KSD 3752) or cemented carbide used for the conventional drills blades, and has a nut hole or a coupling shank 231 at one end to be coupled to the connection rod 220 by screw or coupling engagement, and the lead line 233 inserted into the other end.
[23] Each of the base part 210, the connection rods 220, and the lead terminal 230 has an outer surface "c" subjected to corrosion resistance treatment via hot-dip galvanizing. Further, the hard material "a" for the base part 210, the connection rods 220 and the lead terminal 230 is preferably SM45C (carbon steel for machine structural use) or cemented carbide used for the conventional drills blades, which has a sufficient strength so as not to suffer from property change or bending during drilling operation.
[24] Although the present invention has been described with reference to the embodiments and the accompanying drawings, the invention is not limited to the embodiments and the drawings. It should be understood that various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present invention as defined by the accompanying claims.
[25]
Claims
[1] A screw or coupling connection type ground rod structure with a drills blade shape, comprising a ground line extending from a lightning arrester or a processed branch line, disposed to protect devices such as transmission and distribution lines and electric transformers from lightning, into the ground, a multistage screw or coupling connection type ground rod connected to a distal end of the ground line and buried in the ground, the ground rod having a drills blade shape and being extended by means of screw or coupling engagement, and a sleeve for connecting a lead line connected to a lead terminal of the ground rod to the ground line, wherein the ground rod comprises a base part, a connection rod, and a cutting edge integrally formed with the base part and connection rod constituting a drills blade-shaped body of the ground rod to perforate a base rock encountered during installation of the ground rod.
[2] The ground rod according to claim 1, wherein the lead terminal has an outer surface subjected to corrosion resistance treatment via hot-dip galvanizing, and the base part, the connection rod and the lead terminal are made of SM45C (carbon steel for machine structural use) or cemented carbide used for conventional drills blades, both having a sufficient strength so as not to experience property change or bending during drilling.
[3] The ground rod according to claim 2, wherein the cutting edge formed around the base part has industrial diamonds for drilling rocks integrally welded to a leading end of the cutting edge to perforate the base rock encountered during installation of the ground rod.
[4] The ground rod according to claim 2, wherein each connection space between the base part, the connection rod, and the lead terminal constituting the ground rod is filled with a conductive compound to prevent corrosion of the base part, the connection rod and the lead terminal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020070050141A KR20080103171A (en) | 2007-05-23 | 2007-05-23 | A ground rod structure with drill's blade shape |
| KR10-2007-0050141 | 2007-05-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008143421A1 true WO2008143421A1 (en) | 2008-11-27 |
Family
ID=40032082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2008/002678 WO2008143421A1 (en) | 2007-05-23 | 2008-05-14 | A ground rod structure with drills blade shape |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20080103171A (en) |
| WO (1) | WO2008143421A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901034A (en) * | 2015-05-07 | 2015-09-09 | 国家电网公司 | Grounding device for avoiding misoperaiton of wiring sequence |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101050080B1 (en) * | 2009-06-09 | 2011-07-19 | 김민성 | Drilling ground rod and drilling ground rod construction method |
| KR102063823B1 (en) * | 2019-07-31 | 2020-01-08 | 주식회사 백림종합건축사사무소 | Earthing Device for Railway Electrical Equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0154406B1 (en) * | 1995-10-25 | 1998-11-16 | 장역식 | Earth pin |
| KR200211485Y1 (en) * | 2000-08-14 | 2001-01-15 | 제룡산업주식회사 | Lead terminal and earth copper stick with spiral screw thread |
| JP2005251712A (en) * | 2004-03-01 | 2005-09-15 | Kunio Sugawara | Grounding electrode with projection |
| KR20060002315A (en) * | 2004-07-01 | 2006-01-09 | 장정오 | Ground rod having the quite a number blades |
| KR20070042315A (en) * | 2005-10-18 | 2007-04-23 | 한국전력공사 | A ground rod and connection sleeve filled with compound of electric comduction |
-
2007
- 2007-05-23 KR KR1020070050141A patent/KR20080103171A/en not_active Application Discontinuation
-
2008
- 2008-05-14 WO PCT/KR2008/002678 patent/WO2008143421A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0154406B1 (en) * | 1995-10-25 | 1998-11-16 | 장역식 | Earth pin |
| KR200211485Y1 (en) * | 2000-08-14 | 2001-01-15 | 제룡산업주식회사 | Lead terminal and earth copper stick with spiral screw thread |
| JP2005251712A (en) * | 2004-03-01 | 2005-09-15 | Kunio Sugawara | Grounding electrode with projection |
| KR20060002315A (en) * | 2004-07-01 | 2006-01-09 | 장정오 | Ground rod having the quite a number blades |
| KR20070042315A (en) * | 2005-10-18 | 2007-04-23 | 한국전력공사 | A ground rod and connection sleeve filled with compound of electric comduction |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901034A (en) * | 2015-05-07 | 2015-09-09 | 国家电网公司 | Grounding device for avoiding misoperaiton of wiring sequence |
| CN104901034B (en) * | 2015-05-07 | 2018-07-24 | 国家电网公司 | A kind of earthing or grounding means avoiding order of connection maloperation |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20080103171A (en) | 2008-11-27 |
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